yeah, flip now as hotrod sugested.
starting the flowering process now will give you shorter plants, but you will be able to get to them to care for them more easily.
if this is your first grow, i would use the kiss method, (keep it simple stupid, untill you have a few grows under your belt and you have a better idea what to do and how to do it. you will still end up with a nice crop, and they do look very healthy